2" Focal Extender - 2x

Used this with a 2-inch eyepiece and the image stayed sharp even at the edges—no darkening I could see. The fully coated lenses really make a difference in brightness. Exactly what I needed for planetary viewing.

Finally, a focal extender that doesn't rob you of image brightness—the fully EMD-coated lenses keep things crisp. I’ve been using it with both my 2-inch and 1.25-inch eyepieces, and the adapters make swapping effortless. Definitely sharpened up my planetary views.

The multi-coated optics on this extender keep the image crisp and bright, even when I push it to 2x with my 2-inch eyepiece. It's solidly built and threads on without any play, which is exactly what I wanted for planetary viewing.